Knee brace



FIG. 1 is a perspective view of a knee brace in a wearing state showingmy new design;

FIG. 2 is another perspective view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a left elevational view thereof;

FIG. 6 is a right elevational view thereof;

FIG. 7 is a top side view thereof;

FIG. 8 is a bottom plan view thereof; and,

FIG. 9 is a perspective view of the knee brace when it's not in use.

The broken lines in the figures are for the purposes of illustratingportions of the knee brace, which form no part of the claimed design.

CLAIM The ornamental design for a knee brace, as shown and described. 